December 2021 0 5 Report
Алгебра. Даю 50 баллов! Выручайте плиз))
1. При каких значениях k уравнение (k-1)х^2+(k+4)x+k+7=0 имеет единственный корень?
2. Решить уравнение: |x^2+4x+2|=5x+6/3
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